<template>
    <el-container class="home_container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
             <el-button type="info" round @click="logout">退出</el-button>
        </el-header>
        <el-container>
            <!-- 侧边栏区域 -->
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <!-- 伸缩菜单栏 -->
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!-- 侧边栏菜单区域 -->
                <el-menu  background-color="#333744" text-color="#fff" active-text-color="#409EFF" unique-opened :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
                    <!-- 一级菜单区域 -->
                    <el-submenu :index="item.id + '' " v-for="item in menuList" :key="item.id">
                        <!-- 一级菜单模板区域 -->
                        <template slot="title">
                            <!-- 图标 -->
                            <i :class="icons[item.id]"></i>
                            <!-- 文本 -->
                            <span>{{item.authName}}</span>
                        </template>
                        <!-- 二级菜单区域 -->
                        <el-menu-item :index="'/' + subItem.path " v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
                            <template slot="title">
                            <!-- 图标 -->
                            <i class="el-icon-menu"></i>
                            <!-- 文本 -->
                            <span>{{subItem.authName}}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                   
                </el-menu>
            </el-aside>
            <!-- 主题区域 -->
            <el-main>
                <!-- 路由占位符 -->
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>
<script>
export default {
    data(){
        return {
            // 左侧菜单数据
            menuList:[],
            icons:{
                "125":'iconfont icon-user',
                "103":'iconfont icon-tijikongjian',
                "101":'iconfont icon-shangpin',
                "102":'iconfont icon-danju',
                "145":'iconfont icon-baobiao'
            },
            isCollapse:false,
            activePath:'',
        }
    },
    created(){
        this.getMenuList();
        this.activePath = window.sessionStorage.getItem("activePath")
    },
    //退出并清除token返回login页
    methods:{
        logout(){
            window.sessionStorage.clear();
            this.$router.push('/login')
        },
        //把左侧菜单栏数据赋值给data 里面menuList数组
        async getMenuList(){
         const {data:res} = await this.$http.get('menus');
        //  console.log(res);
         if(res.meta.status != 200)  return this.$message.error(res.meta.msg);
         this.menuList = res.data
        },
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
        },
        saveNavState(activePath){
            window.sessionStorage.setItem("activePath",activePath)
            this.activePath = window.sessionStorage.getItem("activePath")
        }
    }
}
</script>
<style lang="less" scoped>
    .home_container{
        height: 100%;

    }
    .el-header{
        display:flex;
        justify-content:space-between;
        align-items:center;
        padding-left:0px;
        background-color: #373d41;
        >div{
            display:flex;
            align-items:center;
            color:#fff;
            font-size:20px;
            span{
                margin-left:20px;
            }
        }

    }
    .el-aside{
        background-color: #333744;
    }
    .el-main{
        background-color: #eaedf1;
    }
    .iconfont{
        margin-right:20px;
    }
    .el-menu{
        border-right:none;
    }
    .toggle-button{
        color:#fff;
        font-size:10px;
        line-height:24px;
        background-color: #4a5064;
        text-align:center;
        letter-spacing: 0.2em;
        cursor:pointer;
    }
</style>